CAROL & MIKE WERNER / VISUALS UNLIMITED, INC. / SCIENCE PHOTO LIBRARY CAROL & MIKE WERNER / VISUALS UNLIMITED, INC. / SCIENCE PHOTO LIBRARY
Biomedical illustration of human DNA (top) and FANA or synthetic DNA (bottom). In synthetic DNA the deoxyribose sugar has been replaced with 2-fluoroarabinose. Color key: black=carbon, orange=phosphorus, yellow=deoxyribose sugar; green=2-fluoroarabinose.
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